Dear Experts,
I'm intersted to analyze the GLM model which is estimated with SPM. After preprocessing and estimation I'm able to extract the beta values for each voxel estimated by GLM as well as the T-values for contransts. I'm also interested to extract the covariance matrix of the voxels, i.e the covariance component of Y (which is the same for espilon) in the model:
Y = Xbeta + epsilon
I have around 200k values on the beta for each subject, so the matrix should be sized 200k x 200k. The residuals components estimaed using AR(1).
Is there any way to do so with SPM?
I didn't find any answer online.
Thanks
Yuval.
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